Major aquifers, well yields, estimated natural recharge, estimated water in storage, number of index wells and date of last water-level sweep are shown in Table 4.7-5. Figure 4.7-6 shows aquifer flow direction and water-level change between 1990-1991 and 2003-2004. Figure 4.7-7 contains a hydrograph for a selected well shown on Figure 4.7-6. Figure 4.7-8 shows well yields in one yield category. A description of aquifer data sources and methods as well as well data sources and methods, including water-level changes and well yields are found in Volume 1, Appendix A.

Storage estimates for this basin range from 62,440 acre-feet to a depth of 700 feet to 1.0 million acre-feet to a depth of 1,200 feet.

Water Level

Refer to Figure 4.7-6. Water level is shown for wells measured in 2003-2004.

The Department annually measures one index well in this basin. A hydrograph for this well is shown in Figure 4.7-7.

The Department measures water levels four times daily at one automated ground water monitoring site in the west-central portion of the basin.

There are only three water depths recorded in this basin in 2003-2004. In these wells, the deepest is 931 feet in the southern portion of the basin along Pierce Ferry Road and the shallowest is 134 northeast of Meadview.